煤矿井下风扇自动调节装置的设计摘要针对因通风机恒速云装而造成“一风吹”排放瓦斯，致使主巷道内，瓦斯浓度超限的问题，设计一种可根据巷道内瓦斯浓度值改变而自动调节通风机转速的隔爆兼本安型通风机自动转速自动调节装置，用于对煤矿井下巷道掘进过程中超限瓦斯的排放，从根本上解决了因“一风吹”而造成的瓦斯爆炸爆炸的事故隐患。采用SPWM变频技术、PLC技术研制而成的一种新型全自动瓦斯排放装置，主要用于控制煤矿井下掘进工作面局部风机，进而实现掘进工作面超限瓦斯的自控排放关键词：局扇，瓦斯传感器，变频调速，PLCCoalmineshaftventilatorautomaticcontroldevicedesignABSTRACTFansinconnectionwithaconstantspeedwithcloudscausedby"YiFengchui"gasemissions,causingthemainroadway,theconcentrationofgas-gaugeproblems,todesignatunnelunderthegasconcentrationinthevalueofchangesinfanspeedautomaticadjustmentoftheflameproofFansofthistypeofautomaticspeedautomaticadjustmentdevicesforthecoalminetunnelboringprocessoverrungasemissions,andtofundamentallysolvetheresultof"YiFengchui"andtheexplosioncausedbygasexplosioninthehiddencausesofaccidents.SPWMfrequencytechnologyused,PLCtechnologyfromdevelopedanewtypeofautomaticgasemissionsdevices,mainlyusedtocontrolcoalmineheadingfacelocalfansandthenmakingtheheadingface-gauge-controlledgasemissionsKeywords:Bureaufan,gassensor,frequencyconversionvelocitymodulation,PLC目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc201478427"第一章概述PAGEREF_Toc201478427\h1HYPERLINK\l"_Toc201478428"1.1煤矿井下有五大灾害PAGEREF_Toc201478428\h1HYPERLINK\l"_Toc201478429"1.2矿井通风瓦斯事故在矿井安全事故中的比重PAGEREF_Toc201478429\h1HYPERLINK\l"_Toc201478430"1.3瓦斯爆炸的危害性：PAGEREF_Toc201478430\h2HYPERLINK\l"_Toc201478431"1.3.1瓦斯爆炸后产生剧毒气体——一氧化碳。PAGEREF_Toc201478431\h2HYPERLINK\l"_Toc201478432"1.3.2瓦斯爆炸后产生高温。PAGEREF_Toc201478432\h2HYPERLINK\l"_Toc201478433"1.3.3瓦斯爆炸以后产生高压气体。PAGEREF_Toc201478433\h2HYPERLINK\l"_Toc201478434"1.3.4瓦斯爆炸后，在爆炸地点．由于空气稀薄，温度急剧下降，PAGEREF_Toc201478434\h2HYPERLINK\l"_Toc201478435"1.4局部通风机的发展状况PAGEREF_Toc201478435\h2HYPERLINK\l"_Toc201478436"1.4.1国内外局扇发展情况PAGEREF_Toc201478436\h2HYPERLINK\l"_Toc201478437"1.5交流变频调速的发展现状PAGEREF_Toc201478437\h4HYPERLINK\l"_Toc201478438"1.6模糊控制概述PAGEREF_Toc201478438\h4HYPERLINK\l"_Toc201478439"1.7PLC可编程控制器的现状和发展PAGEREF_Toc2014